Wonderful game! only issue i seem to be having is, me and my friend love a bit of competition, and the two player option doesn't seem to be working. At least, it does not activate using the enter key. Is anyone else getting the same problem?
let me say this though, many casuals in the comments are requesting an easy mode and balances, however, games like dark souls and cuphead are popular due to their difficulty. So, i think you should consider leaving the single player as is, and promoting the game based off of its difficulty. Just my opinion tho.